Transgenic mice engineered to contain the mutant versions of the huntingtin gene with various numbers of
_____________________ repeats have phenotypes similar to humans affected by Huntington disease. Fill in the blank(s) with the appropriate word(s).
CAG
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The human genome is mostly composed of:
A. active retrotransposons. B. protein-coding genes. C. introns. D. transposons and retrotransposons that are mostly inactive. E. long repetitive sequences like centromeres and telomeres.
If a virus utilizes a lytic life cycle of reproduction, it will not induce tumors
Indicate whether this statement is true or false.
According to Mendel's Law of Independent Assortment,
A) alleles of genes on different chromosomes assort randomly into different gametes. B) alleles of genes assort into gametes grouped according to how they were inherited originally. C) dominant alleles for one gene must assort into the same gamete as the dominant alleles for another gene. D) dominant alleles for one gene must assort into the same gamete as the recessive alleles for another gene.
Lipids are important to biological systems because
A) they are solid at body temperature so they stabilize membranes. B) some lipid types are potentially large sources of energy to perform cellular work. C) most help to buffer aqueous solutions in the body. D) all lipids are very soluble in water. E) they are able to store and transmit genetic information.